使用enable_if"伪造"模板类方法专门化

#include<iostream>
#include <type_traits>

template<typename T>
struct MyTemplate {
    void foo() {
        std::cout << "General template"<< std::endl;
    }
};

template<typename T>
struct MyTemplate<T*> {
    typename std::enable_if<std::is_pointer<T*>::value, void>::type
    foo() {
        std::cout << "Pointer specialization"<< std::endl;
    }
};

int main() {
    MyTemplate<int> m1;
    MyTemplate<int*> m2;
    m1.foo(); // Output: General template
    m2.foo(); // Output: Pointer specialization
    return 0;
}